from learn_clazz import *

def hello(x, y):
    nx = x + y
    ny = x - y
    return nx, ny


if __name__ == '__main__':
    nx, ny = hello(5, 8)
    print('result is nx: %s ny: %s ' % (nx, ny))
    b = A()
    b.hello()
    print("dd")
    world()
